Evaluation on Nutritional Components of the Muscle in the Oreochromis niloticus×O. mossambicus

The nutritional components of the muscle in the Oreochromis niloticus×O. mossambicus were studied and its nutritional quality was also synthetically evaluated. The results showed that its crude protein is 85.2%(dry basis), on the basis of dry matter of muscle, the amount of hydrolytic amino acids is 84.14%, in which the content of essential amino acids is 35.59 %,making up 42.30 % of total amino acids. The score of amino acid is 108 and the first limited amino acid is sulfur-containing amino acid(Met and Cys) as compared with the FAO/WHO suggested level(1973).The 4 tasty amino acids were rich in the free amino acids , and the taurine content is as high as 1.13%,which accounts for 12.39% of the total free amino acid. The EPA and DHA constitute 5.5% of the total fatty acids. There was a high content of mineral in the muscles of Oreochromis niloticus×O. mossambicus especially for Se. In conclusion, Oreochromis niloticus×O. mossambicus is one of fishes with better nutritive value and raising value.